Molding apparatus.



A. A. PAULY.-

MOLDING APPARATUS. APPLICATION FILED JUNE 7, 1909.

Patented July 19, 1910.

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, A.A.PAULY. MOLDING APPARATUS.

APPLICATION FILED JUNE 7. 1909.

Patented July 19,1910.

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965,006. Patented July 19,1910.

g'a @QWM ATTORNEY ALBERT A. PAULY, OF YOUNGSTOWN,

OHIO, ASSIGNOR TO THE CONCRETE STONE AND SAND COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF OHIO.

MOLDING APPARATUS.

To all whom it may concern:

Be it known that I, ALBERT A. PAULY, a citizen of the United States, residing at Youngstown, in the county of Mahoning and State of Ohio, have invented or discovered new and useful Improvements in Molding Apparatus, of which the following is a specification.

My invention relates to apparatus for molding cementitious or similar articles and has for its object the making of such articles, as cement building blocks, in a combined molding and setting apparatus, in which the articles are formed and moved in a continuous path and subjected to heat until they are sufficiently set to stand alone. I show an apparatus in which cement building blocks are formed intermittently, but my drawings are merely illustrative of only one way in which my invention may be embodied and practiced.

Referring to the accompanying drawings, Figure 1 is a longitudinal section of my invention, taken on the line 11 of Fig. 1 and partly broken away, the parts being ready for the filling of the molding space; Fig. 2, a longitudinal section of Fig. 4 taken on the line 22, parts being broken away; Fig. 3, a longitudinal of Fig. 4@taken on the line 3-3, parts being broken away; Fig. 4, a central horizontal section of Fig. 1; Fig. 5, a left-hand elevation of Fig. 4:; Fig. 6, a cross-section on the line 6-6, Fig. 41, Fig. 7, a perspective showing a portion of the cores, the plunger, and the upper half of a pallet; Fig. 8, a perspective of a pallet; Fig. 9, a cross-section of a moldwith four cores, showing a pallet; and Fig. 10, a perspective of the three-part pallet.

Referring first to Figs. 1 to 8, l represents a box-like casing, having the bottom 2, the sides 3, and the top 4 hollow or constituting a jacket to receive steam, whereby the cement blocks 5 in the casing 1 may be heated to facilitate their drying or setting. This casing 1 has its front end provided with the hinged cover 4. which is about the length of a cement block which the apparatus is designed to make. The cover 4 forms a part of the top 4 and when horizontal closes the top of the mold space at the front of the casing 1, as shown in Fig. 2. The casing may extend indefinitely to the rear of the cover 1, the length being suf- Specification of Letters Patent.

Application filed .Tune 7, 1909.

Patented July 19, 1910. Serial No. 500,613.

ficient to retain the blocks in the casing until they have set so as to stand alone.

Ext-ending longitudinally through the casing are a pair of cores (3, arranged so as tomake a building block or tile with two openings therein when cement is placed in the casing. The forward ends of the cores 6 are secured in the support 7 by means of the screws 8 or in some other approved manner.

9 is a plunger provided with the openings fitting the cores 6 and having such dimensions as will allow it to travel within the casing 1 in engagement with the bottom, sides, and the cover thereof. The plunger 9 is provided with the actuating bars 10 by which it may be reciprocated as hereinafter described.

The pallets are each composed of two sections 11 shaped somewhat like the letter E. When the plunger has been withdrawn from the mold section of the casing 1 and occupies the position shown in Fig. 3, the upper section is placed on the cores (5 as shown in Fig. 7, but pushed back against the plunger 9, as shown in Fig. 3. The lower section is slid beneath the cores and rotated to a vertical position against the pusher 9 and beneath the upper section ofthe pallet as shown in Fig. but resting against the pusher 9 as shown in Fig. 3.

A pair of pallet sections 11 having been placed beneath the hinge-pin of the cover 4 or other desired place to determine the right-hand end of a cement block, and the plunger with the pair of pallet-sections 11 resting against it, as described, having been moved to the position shown in Fig. 1, where the pallet closed the left-hand end of the easing or mold section, and the cover 4: being raised as shown in Figs. 1 and 3, cement is poured into the space between the said two pallets. When this space is filled, the cover 4 is closed as shown in Fig. 2 and the plunger actuated so as to move to the position shown in Fig. 2, the cement block being forced from its molding position to its first setting or drying position. The plunger 9 is returned to the position shown on Fig. 3, leaving the pallets in the position shown in Fig. 2; the cover 4 is raised, another pair of pallet sections 11 is placed on the cores 6 as heretofore described; and the plunger with the pallet moved again to the position shown on Fig. 1, after which cement is poured into the mold section as before described. The cover 1' is again closed and the plunger 9 is again actuated to shove the newly made block to the position previously occupied by the first block, which is forced by the second block, to its second drying or setting position. The operation is repeated, each newly formed block acting as a pusher to move all the previously made blocks along in the casing toward the right. The casing is of such length that when the right-hand blocks emerge therefrom they will be sufficiently set to hold their shape. The cores 6 are made as long as necessary to supportthe blocks. After the right-hand block has been pushed oif from the cores it may be removed in any desired manner.

In Figs. 9 and 10, I have shown my invention adapted to a block with four openings. I use the two pallet sections 11 as before but their limbs or arms 12 reach merely to the adjacent faces of the cores, as shown on Fig.

, 9. The space between the adjacent ends of the arms 12 of the pallet sections is filled by the straight rectangular section 11. In the first form of my invention, the pallet sections 11 had the ends of their arms 12 in contact as shown in Figs. 3 and 7. The number of arms 12 and their arrangement will depend on the number of cores; in fact, the pallet sections might be made of various shapes, it being essential only that the sections when assembled shall, at a given crosssection fill all the space around the cores. The right hand ends of the cores are supported in the casing by the pallets. The cores are provided with steam inlets 14 and outlets 15.

Steam is supplied to the hollows in the casing by means of the pipes 16, which will be located at proper places to heat the molds as required. Their number will vary also according to circumstances. The pipes 16 are provided with the valves 17 so that the amount of steam admitted at the various places may be regulated as desired. Preferably the steam pipes will be connected to a common supply pipe 18. Vents 19 are provided in the bottom of the casing to drain off water of condensation and to keep the steam in circulation. These vents may be placed elsewhere than where shown.

I claim 1. In an apparatus for molding hollow articles, an elongated casing, a core therein, a support for the core located in front of the casing, an ejector surrounding the core and capable of entering the casing, there being a space between the front end of the casing and the ejector when retracted, sectional pallets constructed to be fitted around the core in the space between the end of the casing and the retracted core, and means for moving the ejector and an assembled pallet to close the front end of the casing, one side of the casing being provided with a charging opemng.

2. In an apparatus for molding hollow articles, an elongated casing, a hollow core therein, a support for the core located in front of the casing, means for adjusting the core longitudinally, an ejector surrounding the core and capable of entering the casing, there being a space between the front end of the casing and the ejector when retracted, sectional pallets constructed to be fitted around the core in the space between the end of the casing and the retracted core, and means for moving the ejector and an assembled pallet to close the frontend of the easing, one side of the casing being provided with a charging opening.

Signed at Pittsburg, Pa., this 28th day of May, A. D. 1909.

ALBERT A. PAULY.

l/Vitnesses ELVA S'rANIoK, ANNA R. BEATTY. 

